Plots2: Tag counts aren't updating - and reworking Related Tags query

[jywarren]

I think we're prioritizing related tags on the count field, but don't actually

https://github.com/publiclab/plots2/blob/fe2ffd6d71b9c5fc7c4ff09bb9d770ce30f4fe78/app/models/tag.rb#L362-L375

We have a run_count method here, but it's never called:

https://github.com/publiclab/plots2/blob/fe2ffd6d71b9c5fc7c4ff09bb9d770ce30f4fe78/app/models/tag.rb#L36-L39

Let's do 2 things

• [x] fix run_count by running it from time to time, but also:
• [x] tally/histogram nids in the first query above, which will allow us to sort them by how many times they co-occurred with the original tag, and fetch only the top 5.

Also note: previously we were trying to collect the top 5 by overall high tag usage, but we were failing due to run_count not being updated. The result was that related_tags was just 5 randomly selected co-occurring tags, but not the 5 most commonly co-occurring.

Now, we'll be measuring by how OFTEN they co-occur.

We should be able to run:

data = ["a", "b", "a", "b", "a", "c", "t"]
data.group_by{ |v| v }.map{ |k, v| [k, v.size] }
# => [["a", 3], ["b", 2], ["c", 1], ["t", 1]]

[jywarren]

So, #5715 solves the co-occurence, but when should we re-count tallies? Whenever a tag is made?

[jywarren]

We'd add tag.run_count then...

[skilfullycurled]

Responding to the "heads up" from @jywarren. Jeff, thank you!! Two clarifying questions because I'm not quite sure what your heads up entailed.

When you wrote:

data = ["a", "b", "a", "b", "a", "c", "t"]
data.group_by{ |v| v }.map{ |k, v| [k, v.size] }
# => [["a", 3], ["b", 2], ["c", 1], ["t", 1]]

These seem like just counts. I would expect a co-occurence to look something like this (sorry I don't know the Ruby structure)

[[1, 6, 2], [3], [3, 1, 2]] -> {(1,2):2, (1,3):1, (1,6):1}

[skilfullycurled]

I guess that's just one question...

[jywarren]

Yes that's right, the group_by command (obscurely) creates a count of
incidence of each tag.

On Mon, May 13, 2019, 6:46 PM skilfullycurled [e-mail]
wrote:

I guess that's just one question...

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[skilfullycurled]

Okay, I'm not clear how that handles the co-occurrence but feel free to leave the explanation for another time. I'm sure you have plenty of other things to do. Not urgent.

[jywarren]

Its bc it's only fetching data for related tags to a single tag, not to all tags. So instead of returning all the groupings, it's returning just a list of tags that have co-occurred with the given tag. So, they are just counts of how many times they've co-occurred. Thanks!

[skilfullycurled]

I see. Awesome! Looking forward to seeing it play out and thanks for including me!

[jywarren]

i'm eager too! As mentioned in the chatroom we've pushed back the big publication by one more day after some hours of debugging. But it should be live on https://stable.publiclab.org/tags now!!!

[jywarren]

This is not live yet -- probably late this week!